RAR archive of about 1.05 MB labelled LL6 with revision R1A and a date code of 20090715, which reads as 15 July 2009. LL6 follows the Quanta style of project codes, so the contents are most likely a schematic for a Quanta-built notebook board, although the name states no laptop brand or model. Before using the diagrams for tracing power rails or signals, check that the code and revision printed on the PCB match. Extract the archive and open the PDF in any reader, or the board files in suitable viewing software.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @generalschematics. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.